Properties: The Nike backpack is especially recommended for athletes two-way zipper adjustable straps side pockets Material: polyester Color: blue;Properties: The Nike backpack is especially recommended for athletes two-way zipper adjustable straps side pockets Material: polyester Color: black; Properties: The Nike backpack is perfect for everyday use. Durable fabric. Adjustable, padded shoulder straps. Carrying handle. Open side pocket. Material: synthetic Color: blue